/**
 *    Copyright (C) 2014 MongoDB Inc.
 *
 *    This program is free software: you can redistribute it and/or  modify
 *    it under the terms of the GNU Affero General Public License, version 3,
 *    as published by the Free Software Foundation.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU Affero General Public License for more details.
 *
 *    You should have received a copy of the GNU Affero General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *    As a special exception, the copyright holders give permission to link the
 *    code of portions of this program with the OpenSSL library under certain
 *    conditions as described in each individual source file and distribute
 *    linked combinations including the program with the OpenSSL library. You
 *    must comply with the GNU Affero General Public License in all respects for
 *    all of the code used other than as permitted herein. If you modify file(s)
 *    with this exception, you may extend this exception to your version of the
 *    file(s), but you are not obligated to do so. If you do not wish to do so,
 *    delete this exception statement from your version. If you delete this
 *    exception statement from all source files in the program, then also delete
 *    it in the license file.
 */

#include "mongo/platform/basic.h"

#include "mongo/db/catalog/collection_options.h"

#include "mongo/db/json.h"
#include "mongo/unittest/unittest.h"

namespace mongo {

    void checkRoundTrip( const CollectionOptions& options1 ) {
        CollectionOptions options2;
        options2.parse( options1.toBSON() );
        ASSERT_EQUALS( options1.toBSON(), options2.toBSON() );
    }

    TEST( CollectionOptions, SimpleRoundTrip ) {
        CollectionOptions options;
        checkRoundTrip( options );

        options.capped = true;
        options.cappedSize = 10240;
        options.cappedMaxDocs = 1111;
        checkRoundTrip( options );

        options.setNoIdIndex();
        options.flags = 5;
        checkRoundTrip( options );
    }

    TEST( CollectionOptions, ErrorBadSize ) {
        ASSERT_NOT_OK( CollectionOptions().parse( fromjson( "{capped: true, size: -1}" ) ) );
        ASSERT_NOT_OK( CollectionOptions().parse( fromjson( "{capped: false, size: -1}" ) ) );
    }

    TEST( CollectionOptions, ErrorBadMax ) {
        ASSERT_NOT_OK( CollectionOptions().parse( BSON( "capped" << true << "max"
                                                                 << ( 1LL << 31 ) ) ) );
    }

    TEST( CollectionOptions, IgnoreSizeWrongType ) {
        CollectionOptions options;
        ASSERT_OK( options.parse( fromjson( "{size: undefined, capped: undefined}" ) ) );
        ASSERT_EQUALS( options.capped, false );
        ASSERT_EQUALS( options.cappedSize, 0 );
    }

    TEST( CollectionOptions, IgnoreMaxWrongType ) {
        CollectionOptions options;
        ASSERT_OK( options.parse( fromjson( "{capped: true, size: 1024, max: ''}" ) ) );
        ASSERT_EQUALS( options.capped, true );
        ASSERT_EQUALS( options.cappedSize, 1024 );
        ASSERT_EQUALS( options.cappedMaxDocs, 0 );
    }

    TEST( CollectionOptions, IgnoreUnregisteredFields ) {
        ASSERT_OK( CollectionOptions().parse( BSON( "create" << "c" ) ) );
        ASSERT_OK( CollectionOptions().parse( BSON( "foo" << "bar" ) ) );
    }

    TEST(CollectionOptions, InvalidStorageEngineField) {
        // "storageEngine" field has to be an object if present.
        ASSERT_NOT_OK( CollectionOptions().parse(fromjson("{storageEngine: 1}")));

        // Every field under "storageEngine" has to be an object.
        ASSERT_NOT_OK( CollectionOptions().parse(fromjson(
            "{storageEngine: {storageEngine1: 1}}")));
    }

    TEST(CollectionOptions, ParseEngineField) {
        CollectionOptions opts;
        ASSERT_OK(opts.parse(fromjson("{unknownField: 1, "
            "storageEngine: {storageEngine1: {x: 1, y: 2}, storageEngine2: {z: 3}}}")));
        checkRoundTrip(opts);

        // Unrecognized field should not be present in BSON representation.
        BSONObj obj = opts.toBSON();
        ASSERT_FALSE(obj.hasField("unknownField"));

        // Check "storageEngine" field.
        ASSERT_TRUE(obj.hasField("storageEngine"));
        ASSERT_TRUE(obj.getField("storageEngine").isABSONObj());
        BSONObj storageEngine = obj.getObjectField("storageEngine");

        // Check individual storage storageEngine fields.
        ASSERT_TRUE(storageEngine.getField("storageEngine1").isABSONObj());
        BSONObj storageEngine1 = storageEngine.getObjectField("storageEngine1");
        ASSERT_EQUALS(1, storageEngine1.getIntField("x"));
        ASSERT_EQUALS(2, storageEngine1.getIntField("y"));
        ASSERT_TRUE(storageEngine.getField("storageEngine2").isABSONObj());
        BSONObj storageEngine2 = storageEngine.getObjectField("storageEngine2");
        ASSERT_EQUALS(3, storageEngine2.getIntField("z"));
    }

    TEST(CollectionOptions, ResetStorageEngineField) {
        CollectionOptions opts;
        ASSERT_OK(opts.parse(fromjson(
            "{storageEngine: {storageEngine1: {x: 1}}}")));
        checkRoundTrip(opts);

        opts.reset();

        ASSERT_TRUE(opts.storageEngine.isEmpty());
    }

    TEST(CollectionOptions, ModifyStorageEngineField) {
        CollectionOptions opts;

        // Directly modify storageEngine field in collection options.
        opts.storageEngine = fromjson("{storageEngine1: {x: 1}}");

        // Unrecognized field should not be present in BSON representation.
        BSONObj obj = opts.toBSON();
        ASSERT_FALSE(obj.hasField("unknownField"));

        // Check "storageEngine" field.
        ASSERT_TRUE(obj.hasField("storageEngine"));
        ASSERT_TRUE(obj.getField("storageEngine").isABSONObj());
        BSONObj storageEngine = obj.getObjectField("storageEngine");

        // Check individual storage storageEngine fields.
        ASSERT_TRUE(storageEngine.getField("storageEngine1").isABSONObj());
        BSONObj storageEngine1 = storageEngine.getObjectField("storageEngine1");
        ASSERT_EQUALS(1, storageEngine1.getIntField("x"));
    }
}
